Albert a



v (No 'Model.)

A. A. PAGE. DOOR SPRING.

Patented July 5,1892.

UNITED STATES ATENT OFFICE.

ALBERT A. PAGE, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO THE SARGENT & COMPANY, OF SAME PLACE.

DOOR-SPRING.

SPECIFICATION forming part of Letters Patent No. {178,354, dated July 5, 1892.

Application filed January 6, 1892. Serial No. 417,136. (No model.)

To all whom it may concern.-

Beitknown that I, ALBERT A. PAGE, of New Haven, in the county of New Haven andState of Connecticut, have invented a new Improvement in Door-Springs, (Case A and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact descriptionof the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a brokenplan view of a doorspring constructedin accordance with my invention; Fig. 2, a similar View showing the stop entered into the clutch-collar for preventing the spring from uncoiling; Fig. 3, a view, partly in side elevation and partly in section, showing the clutch-pin in its operat-- ing and retracted positions by full and broken lines, respectively.

My invention relates to an improvement in door-springs, the. object being to produce a device having extremely simple and convenient means for adjusting the tension of its spring and for preventing the outer member of its two-part lever from ever getting deadcentered.

With these ends in view my invention consistsin certain details of construction and combinations of parts, as hereinafter described, and pointed out in the claim.

The case or box A, which may be of any approved construction, is provided with a flange or foot A, by means of which it is secured in place. It contains a coiled spring B, which is reversible in it to adapt the device to be used on a door swinging in either direction, the other position of the spring being indicated by dotted lines in the right-hand portion of Fig. l of the drawings. A springshaft C, journaled in the sides of the case, projects through one side thereof and has rigidly attached to it a clutch-collar D, containing a series of peripheral notchesD, forming retaining-points. A two-part lever consisting of the members E and E has its inner member E loosely connected with the said proj ectingend of the shaft bymeans of a screw F, bears upon the outer face of the clutch-collar D, and is constructed near its inner extremity with a vertical perforation e, located over the retaining-notches D V of the clutch-collar and receiving a clutch-pin G, which is longitudinally movable in the said perforation for being entered into any one of the said notches D for coupling the two-part lever with the clutch-collar or being withdrawn, so as to uncouple the said parts. In order to provide for locking the shaft C against rotation when the spring is being Wound up, I provide the device with a stop, which as herein shown consists of a pin H, having bearing in a lug I, formed upon the adjacent face of the case A, and arranged radially with respect to the said clutch-collar, its inner end being adapted to enter the notches D therein and its outer end, which is provided with a head h, extending beyond the periphery of the case. A spiral spring J, encircling the outer end of the stop-pin H and interposed between the outer face of the lug I and the inner face of the head h, exerts a constant tendency to maintain the said stop-pin in its retracted position, in which it is shown in Fig. 1 of the drawings.

When it is desired to wind the spring 13 for increasing its tension, the two-part lever and the clutch-collar are coupled together by means of the clutch pin, after which the clutch and collar are turned together in one direction or the other, according to the one in which the spring iswound. Then when they have been turned as far as it is convenient to turn'them one of the notches in the'collar is brought into line with the inner'end of the stop-pin, which is then projected into .the said notch against the tension of its spring J by inward pressure upon its headed" outer end, the collar being allowed to rotate enough to engage one of the walls of the said notch with the inner end of the stop-pin before pressure upon the outer end of the, same is removed. The clutch-pin is now lifted to uncouple the lever and clutch-collar, after which the lever is moved and recoupled with the collar through another notchtherein. The collar is again rotated, and so on, the stop-pin getting out of the way to prevent the rotation of the collar as soon as the latteris turned enough to relieve the pin and permit its spring to operate in restoring it to its normal position.

I would have it understood that I do not limit myself to the exact construction herein shown and described, but hold myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

In a door-spring, the combination, with a case, coiled spring, and spring-shaft, of a peripherally-notched collar rigidly attached to a projecting end of the said spring-shaft, a lever loosely connected with the said end of the shaft, bearing upon the outer face of the collar, and constructed with a perforation in line with the notches of the collar, a clutchpin located in such perforation and manually ing witnesses.

ALBERT A. PAGE.

Witnesses:

II. II. WVEs'r, 'J. F. GILLETTE. 

